Hello Christophorus Girendro Yogasworo ,

As you have been using Studio 2017 for quite some time, I am assuming this issue has only happened recently.

It would be helpful if you could let us know what you have tried to remedy the problem- and which topics/threads you have read in the SDL community.

Without more information, my first thought would be to ask whether you have been using two screens and that in fact Studio is opening 'off-screen'?

https://community.sdl.com/product-groups/translationproductivity/w/customer-experience/3304.how-to-find-and-move-a-lost-program-back-on-screen

If this fails to remedy the issue, I would check your Windows OS (Windows 7 SP1 or higher) is fully up to date and all updates have been actually installed on your system (often updates maybe downloaded but not correctly installed).

If you are still having issues- navigate to the following

C:\Users\user_name\AppData\Roaming\SDL\SDL Trados Studio\14.0.0.0 and rename the plugincache.xml file

( plugincache.xml file_old

Now reboot your machine and see if Studio now starts properly.